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A System of Acquisition, Processing and Transmission for Heart Sounds and ECG Based on OMAP3530

Author: LiuQi
Tutor: LiuZuo
School: Shandong University
Course: Electronics and Communication Engineering
Keywords: Heart sound signals ECG DaVinci OMAP3530 3G LC6311 Dual-core
CLC: TN911.7
Type: Master's thesis
Year: 2011
Downloads: 158
Quote: 1
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Abstract


In recent years, the incidence rates of cardiovascular disease has been high, the detection of cardiovascular disease is based on the efficient collection and processing of heart sounds and ECG data. Therefore, the design of a high performance, low cost, small size of the heart sounds and ECG data acquisition, processing and transmission system will be the detection and prevention of cardiovascular disease has a very important significance. This paper presents the launch of Texas Instruments (TI) OMAP3530 processor based on DaVinci technology as the core structures of heart sounds and ECG acquisition, processing and transmission system, the system mainly consists of three parts: the front-end signal acquisition and conditioning modules, core processing OMAP3530 module, 3G wireless transmission module LC6311. Front-end signal acquisition and conditioning modules to MEGA8 microcontroller as the core, mainly to complete the acquisition of the heart sound signal and the ECG signal, and will be collected through the serial port to send data to the core processor OMAP3530; using OMAP3530 ARM DSP dual-core characteristics, ARM end of the first to use ECG heart sound signals to locate, and then call the DSP-side heart sound classification algorithm type of heart sound judgment; Finally, 3G module LC6311 heart sound signal and ECG raw data, and DSP-side returned the verdict of the heart sound signal wireless transmission to a PC machine monitoring center. The thesis analyzes the situation and development trend of the heart sounds and ECG data acquisition, processing and transmission system, efficient transmission, accurate analysis of heart sounds and ECG. The main contribution of this paper and innovation: (1) heart sound and ECG acquisition, design the hardware circuit part of the front-end signal acquisition and conditioning modules. Original heart sound and ECG sensor to the front-end signal acquisition module allows more accurate, and complete front-end signal acquisition and conditioning module software design. (2) in the treatment of heart sounds and ECG data, introduced TI OMAP3530 development board based on OMAP3530 processor as the core, and successfully built a simple analysis of the heart sound diagnosis algorithm OMAP3530 development platform based on the Linux system; and OMAP3530 dual-core characteristics, the successful implementation the ARM side DSP-side heart sound classification algorithm is called. (3) the transmission of heart sounds and ECG data, using a 3G module LC6311. The chipset is highly integrated, powerful transmission capacity in the TD-SCDMA standard, supports asymmetric data transmission capacity up and down, the uplink and downlink data transfer rate up to 384 kbps. Completion of this module in the OMAP3530 platform debugging. Finally, the PC monitoring center to use Qt to write a simple graphical interface, convenient and intuitive to view the processing results. The paper concludes with a summary of the system problem to be solved and the next focus.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Signal processing
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